Patch 5.2.0 (5-Mar-2013): Paralysis is now a physical, non-magical effect, can no longer be dispelled, grounded or reflected, and its base range has been increased to 20 yards. The paralysis effect lasts 40 seconds (was 30 seconds) for non-player targets, 4 seconds when used against other players, and lasts 50% (was 200%) longer when used from behind a target.